{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["protein", "DNA", "cell type", "cell line", "RNA"], "input": "To dissect the molecular basis for the unusual persistent expression of the IL-2 and IL-2-R alpha genes in these IARC 301 T cells , we have analyzed the interactions of constitutively expressed nuclear proteins with the 5' flanking regions of the IL-2 and IL-2-R alpha genes using both DNase I footprinting and gel retardation techniques."}
{"protein": ["constitutively expressed nuclear proteins", "DNase I"], "DNA": ["5' flanking regions"], "cell type": ["T cells"], "cell line": ["IARC 301"], "RNA": []}